Steam-engine



m t e e; h s s ...U e e h s 3 Dmw .H m .Lg Ln IB M.. ..m a CDU ...b JS n d o M .0 w

NQ. 228,374.y l-'hxcelnedv June 1, 1880;

| I l 1 l l l l l l I r WITNES SES;

mx/ENTOR; @@w. n

3 Sheets-Sheet Y R H L L TI- M 0. J. a d jo M vo m.

Steam-Engine.

No. 228,374. Patented June 1,1880.

www@ Y INVENTOR;

WlTN ESS ES;

@a2/W2 mm I Q D m m m w. w n. w m m w 1 m m m Y Unirse STATES To all whom t 'may concern:

Beit known that I, JOHN GURRY MILLER, of the city of Louisville, in the county of J efferson and State of Kentucky, have invented a new and useful Improvement in Steam-Engines, the same being applicable and intended for oscillating horizontal and vertical engines, of which the following is a specification.

The features of my invention are its arrangements for economizing steam by applying it to the piston direct through the cylinder-heads, cutting it off at the point of application and action, exhausting it through the cylinder-heads, working the receiving and exhaust valves by impact with the piston, and, balancing the pressure against the valves by levers and rods connecting their action.

Figure l is a transverse section. Figs. 2 and 3 are elevations of the cylinder-heads detached from the valve-operating appliances. Fig. 4 is a top view. Fig. 5 is a side elevation.

The letters O, Figs. l, 4, and 5, refer to the bed-plate; letters S to elevations of same, forming steam-box bearing and journal-bearings, referred to by the letters T. The bedplate and bearings mentioned are minor parts, and may be arranged in any practical manner desired.

For explanation of the essential features of this improvement I will begin with Fig. l, in which the letter A refers to inside area of cylinder.

This engine takes the steam through circular steam-box, (marked N,) having a recess at Q, encircling hollow trunnion or steam-pipe shaft. (Marked L.) The steam enters the hollow trunnion at openings therein, (marked R,) passes onwward, through receiving ports, (marked G,) into steam-distributing recesses and valve-seats, (marked I and I,) driving' the piston one way or the other, according to the open or closed positions of the receiving-valves (marked F) and the exhaust-valves, (marked E,) which, by means of their connection with exhaust-recesses(marked I) and the exhaustport, (marked H,) will, when open, readily exhaust the steam through the escape-pipe. (Marked M.)

Because ofthe inward extension ofthe valvestems through the cylinder-heads, it will read- ?fPafrnNr Ottica.

JOHN O. MILLER, OF LOUISVILLE, KENTUCKY.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 228,374, dated June 1, 1880. Application :tiled March 17, 1880. (No model.)

ily be seen how the motion of the piston will open and close the proper receiving and exhaust valves, apply the steam to driving the piston to the opposite end of cylinder, and, when the stroke is completed, alternate the position of the valves by means of their connections through levers (shown at Y in Fig. 5,) working in projecting fulcrums (shown ,at V, same figure) and connected by rods. (Marked W in Fig. 4.)

-It is not necessary in this manner of engine that the steam shall always be worked fullstroke. The iow of steam may be cut off at any practical point of the stroke by means of cams and rods connecting with receivingvalves shifting-rods, in which case the shifting-rod must be severed for independent motion and kept in horizontal position by means of standards for them to slide in.

By means of shifting the sliding cross-connection (marked X in Fig. 4) all the valves may be reversed, and a reverse motion thus given to the engine, or all of them may be thrown partially open and the engine made to blow through when desired.

The letters J, Figs. l, 4, and 5, refer to the valve-stem heads as a means of their connection with levers Y and shifting-rods lV. The letters K refer to the stuffing-boxes and glands in the cylinder-heads for packing the valvestems. f

The exhaust stufng-boxes may be formed in the cylinder-heads and the stuffing packed therein direct, or they may be made in independent parts and inserted into the cylinderheads, as shown in the drawings, and referred to by the letters K, Figs. l, 4, and 5.

The letters V, Figs. 4 and 5, refer to pro- Y jecting fulcrums as a means of attachment to cylinder-heads. The letters B and O refer to the cylinder-heads. The stuffing-box for piston-rod may also be formed in the cylinderhead instead of projecting from it, as shown in the drawings. The letter Z, Figs. 4 and 5, refers to the steam-pipe connection between the engine and boiler. To this connecting-pipe the throttle-valve may be attached.

Having explained the construction and operation of my improvement, what I claim as new, and desire to secure by Letters Patent, is as follows:

IOO

vers and rods, and the connecting-rods connected together by an adjustable cross-bar for reversing the engine, substantially as herein set forth.

In testimony that I claim the foregoing I i have hereunto set my hand this 28th day of February, 1880.

JOHN GURRY MILLER.

En. ME GLEMRY,

Witnesses FRANK BARDONE. 

